Publication Date:
2014-04-15
Description:
A critical concern regarding riverbed stabilisation and river engineering is the short-term general scour that occurs in a field setting far from a river-crossing structure or embankment during a typhoon-induced flood. This study investigated the improvement of existing techniques that have been used to measure riverbed scour. One of these techniques is the numbered-brick column or scour chains method, in which only the maximum general scour depth of riverbed is observed. A wireless tracer for monitoring real-time scour was set up with a numbered-brick column, and was employed to collect synchronous data. The proposed method was successfully used to observe both real-time scour and the maximum depth at flood peak. This observation was conducted at a steep gravel-bed reach of the Shuideliaw Embankment on the intermittent Choshui River in Central Taiwan during Typhoon Soulik, which occurred in 2013. Future studies must be conducted to complete the development of an automatic real-time scour and flood monitoring system for use in severe weather and flow conditions; this would facilitate the identification of riverbed scour during conditions of unstable flow and the improvement of flood prevention engineering, bridge closure detection, and emergency evacuation procedures. This article is protected by copyright. All rights reserved.
Print ISSN:
0885-6087
Electronic ISSN:
1099-1085
Topics:
Architecture, Civil Engineering, Surveying
,
Geography
